Plastic pipeline interface water pressure on-line detection device

Abstract

The utility model belongs to the technical field of pipeline interface detection, and particularly relates to a plastic pipeline interface water pressure on-line detection device which comprises a pipeline sealing hoop and a clamping assembly, the pipeline sealing hoop comprises a first hoop petal and a second hoop petal, and sealing gaskets are arranged at the two ends of the wall faces, close to a pipeline, of the two hoop petals. The wall face, deviating from the pipeline, of the first hoop petal is provided with a first connector used for connecting a pressure detection meter. First butt flanges are arranged on the two sides of the first hoop section, second butt flanges are arranged on the two sides of the second hoop section, and a plurality of stop protruding blocks are arranged on the upper sides of the first butt flanges. The clamping assembly comprises a clamping groove and a plurality of elastic jacking parts arranged on the inner side of the clamping groove in an array mode, and when the clamping groove is moved to the second position from the first position, the elastic jacking parts are connected with the stop protruding blocks in a stop fit mode, so that the first hoop petal and the second hoop petal form a sealing hoop body. The device has higher installation efficiency and use convenience, and the sealing effectiveness and the service life of the hoop body can be prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of pipeline interface detection, and specifically relates to an online water pressure detection device for a plastic pipeline interface. Background Art

[0002] Plastic pipe joints need to undergo rigorous water pressure testing to determine whether the safety, connection strength, sealing and leakage rate of the pipes after connection meet the standards. If untested or unqualified pipes are put into use, once leakage occurs, a lot of economic costs and human resources will be required to check for leaks, repair leaks, or even dismantle the pipes for repair, which often results in significant losses.

[0003] In the prior art, a half joint with a water pressure test gauge on the outside is usually used to perform leakage detection or water pressure test on the pipeline interface. Since the equipment is improved on the basis of the structure of the half joint, and the half joint is fixed to the pipeline interface by matching bolts, nuts, rolled strips or pipe clamps and other accessories, the bolts and nuts need to be tightened strictly according to the torque and fixed sequence, with many steps and slow installation speed. In addition, the half joint connection is easily deformed due to unbalanced force, resulting in poor sealing. Rolled strips or pipe clamps are prone to structural fatigue due to excessive intensity of use, and need to be frequently assessed for damage or replaced, resulting in a short overall service life of the water pressure detection device. Summary of the invention

[0004] Based on the above background technology needs, the present application provides an online water pressure detection device for a plastic pipe interface, which can solve the problems of inconvenient installation, poor sealing and short overall service life in the prior art.

[0005] In order to achieve the above purpose, the technical solution of this application is:

[0006] A plastic pipe interface water pressure online detection device comprises a pressure detection gauge, a pipe sealing hoop and a clamping assembly, wherein the pipe sealing hoop comprises a first hoop flap and a second hoop flap, the first hoop flap and the second hoop flap are used to be close to the pipe wall at both ends and are provided with sealing gaskets, the first hoop flap or the second hoop flap is provided with a first interface away from the pipe wall, and the first interface is fixedly connected to the pressure detection gauge; the first hoop flap surface is symmetrically provided with a first docking flange along the extension direction of the pipe, the second hoop flap is provided with a second docking flange relative to the first docking flange, and a plurality of stop protrusions are arranged in an array on the side of the first docking flange away from the second docking flange; the clamping assembly comprises a clamping groove and an elastic tightening portion, the clamping groove comprises a web and a first flange and a second flange symmetrically arranged on opposite sides of the web, the first flange is slidably connected to the side of the second docking flange away from the first docking flange, the second flange array is provided with a plurality of the elastic tightening portions, and at least part of the elastic tightening portion is connected with the stop protrusion in a stop-matching manner.

[0007] Preferably, the stop protrusion includes a first wedge block, which is arranged in an array on one side of the first docking flange along the extension direction of the pipeline, and a docking gap is arranged between the first wedge blocks; the elastic tightening portion includes a second wedge block and an elastic reset mechanism, and a plurality of the elastic reset mechanisms are arranged in an array on one side of the second flange, the second wedge block is fixedly connected to the elastic reset mechanism, and a blocking plate is arranged on the side of the second wedge block away from the web, and the elastic reset mechanism is used to make the second wedge block and the first wedge block approach and engage with each other.

[0008] Preferably, the elastic reset mechanism includes a guide rod, a spring and a blocking protrusion, the second flange array is provided with a plurality of through holes, the guide rod is penetrated through the through hole, the end of the guide rod extending into the slot is connected to the second wedge block, the blocking protrusion is arranged at the end of the guide rod away from the second wedge block, the spring is sleeved on the middle section of the guide rod, and one end of the spring is fixedly connected to the second flange.

[0009] Preferably, the length of the blocking piece and the length of the second wedge-shaped block are both smaller than the width of the butt gap.

[0010] Preferably, the plastic pipe interface water pressure online detection device also includes an installation auxiliary component, which includes a push rod, a connecting protrusion and a force plate. The connecting protrusion is arranged at one end of the first docking flange or the second docking flange, and the connecting protrusion is penetrated by a guide hole along the extension direction of the pipeline. One end of the push rod passes through the guide hole, and the end of the push rod away from the end of the first docking flange is provided with the force plate, and the push rod is used to push the slot to slide along the second docking flange.

[0011] Preferably, a first thread is provided in the guide hole, a second thread is provided on the surface of the push rod, the push rod is rotationally connected with the first thread through the second thread, the force plate is rotatably connected to one end of the push rod, and an auxiliary knob is provided on the end of the push rod away from the force plate.

[0012] Preferably, a plug-in interface is provided on a side of the auxiliary knob facing away from the push rod, the plug-in interface is in a cross shape or a regular hexagonal shape, and the plug-in interface is used for plugging in a tightening tool.

[0013] Preferably, the number of the installation auxiliary components is four, and the four groups of the installation auxiliary components are respectively arranged at both ends of the first docking flange or the second docking flange.

[0014] Preferably, a sealing strip is provided on one side where the first butt flange and the second butt flange are in contact with each other along the extending direction of the pipeline.

[0015] Preferably, a second interface is provided on the wall surface of the first hoop flap or the second hoop flap facing away from the pipeline, and the second interface is detachably connected to an auxiliary pressurizing mechanism, and the auxiliary pressurizing mechanism is used to inject a pressure measuring medium between the pipeline sealing hoop and the pipeline.

[0016] By adopting the above technical solution, compared with the prior art, the present application has at least the following beneficial effects:

[0017] Horizontally moving a pair of the clamping components can clamp and fix the first hoop flap and the second hoop flap which are sleeved at the pipe interface, so that the first hoop flap and the second hoop flap form a complete hoop body at the pipe interface, which has higher efficiency and convenience in use compared to fixing the first hoop flap and the second hoop flap by using multiple bolts, rolled strips or pipe clamps; in the process of fixing the first hoop flap and the second hoop flap by the clamping groove, the multiple elastic tightening parts arranged in an array on the clamping groove simultaneously squeeze the stop protrusion downward, so that the first docking flange and the second docking flange are sealed and fit together. Compared with other detection devices that use bolts to fix the hoop body for sealing the pipe, the present application is not likely to cause the hoop body to deform due to uneven force at the connection, resulting in sealing failure. At the same time, it extends the service life of the hoop body and to a certain extent slows down the damage assessment cycle and replacement cycle of the water pressure detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the online detection device for water pressure at the interface of a plastic pipe in the embodiment.

[0019] Figure 2 It is a side view of the pipe sealing hoop in the embodiment.

[0020] Figure 3 It is a partial schematic diagram of the front view of the online detection device for water pressure of plastic pipe interface in the embodiment.

[0021] Figure 4 It is a BB cross-sectional view of the online water pressure detection device for the plastic pipe interface in the embodiment.

[0022] Figure 5 Schematic diagram of the structure of the first hoop petal in the embodiment.

[0023] Figure 6 Schematic diagram of the structure of the clamping assembly in the embodiment.

[0024] Figure 7 It is a partially enlarged schematic diagram A of the online detection device for water pressure at the interface of a plastic pipe in the embodiment.

[0025] In the figure: a pressure gauge 10, a pipe sealing hoop 20, a first hoop flap 21, a first docking flange 211, a first wedge block 212, a sealing strip 213, a second hoop flap 22, a second docking flange 221, a sealing gasket 23, a first interface 24, a second interface 25, a clamping assembly 30, a clamping groove 31, a web 311, a first flange 312, a second flange 313, an elastic tightening portion 32, a second wedge block 321, a blocking sheet 3211, an elastic reset mechanism 322, a guide rod 3221, a spring 3222, a blocking protrusion 3223, an installation auxiliary assembly 40, a push rod 41, a connecting protrusion 42, a guide hole 421, a force plate 43, an auxiliary knob 44, an insertion port 441, and an auxiliary pressurizing mechanism 50. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The technical solution of the present application will be further described below in conjunction with the drawings of the embodiments of the present application, and the present application is not limited to the following specific implementation methods.

[0027] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present application, it should be understood that if there are terms such as "upper", "lower", "inner", "outer", "left", "right", "front", "rear", "top", "bottom" and the like indicating directions or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure or component referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present patent, and for those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] The following is combined with Figure 1 To Attachment Figure 7 And specific embodiments further describe the present application in detail.

[0029] In the present application, a plastic pipe interface water pressure online detection device is disclosed, which includes a pressure detection gauge 10, a pipe sealing hoop 20 and a clamping assembly 30, wherein the pipe sealing hoop 20 includes a first hoop flap 21 and a second hoop flap 22, and the first hoop flap 21 and the second hoop flap 22 are used to be close to the wall of the pipe and are provided with sealing gaskets 23 at both ends, and the first hoop flap 21 or the second hoop flap 22 is provided with a first interface 24 away from the wall of the pipe, and the first interface 24 is used to fix the pressure detection gauge 10 by means of threaded connection or plug-in connection; the surface of the first hoop flap 21 is symmetrically provided with a long strip of first docking flange 211 along the extension direction of the pipe, A second docking flange 221 is arranged on the surface of the second hoop flap 22 opposite to the first docking flange 211, and a plurality of stop protrusions are arranged in an array on the side of the first docking flange 211 facing away from the second docking flange 221; the clamping assembly 30 includes a clamping groove 31 and an elastic tightening portion 32, the clamping groove 31 includes a web 311 and a first flange 312 and a second flange 313 symmetrically arranged on opposite sides of the web 311, the first flange 312 is slidably connected to the side of the second docking flange 221 facing away from the first docking flange 211, the second flange 313 is arranged in an array with a plurality of the above-mentioned elastic tightening portions 32, and at least a part of the elastic tightening portion 32 is connected with the stop protrusion in a stop-matching manner.

[0030] Specifically, the first hoop flap 21 and the second hoop flap 22 that can form a complete pipe sealing hoop 20 can be separated or hinged together along the side of the hoop flap; the sealing gasket 23 is arranged in a "C" shape along the first hoop flap 21 and the second hoop flap 22 close to the wall surface of the pipe side wall, and the sealing gasket 23 has high ductility. Shallow grooves for guiding the sealing gasket 23 to extend and deform are arranged at both ends of the first hoop flap 21 and the second hoop flap 22, and the sealing gasket 23 is arranged in the shallow groove; each The length of each sealing gasket 23 is slightly shorter than the length of the shallow groove, and the thickness is greater than the depth of the shallow groove. When the first hoop petal 21 and the second hoop petal 22 are fixed on the pipeline to form the pipeline sealing hoop 20, the sealing gaskets 23 on the first hoop petal 21 and the second hoop petal 22 are compressed to extend along the shallow groove and abut against another adjacent sealing gasket 23 to form a complete annular sealing ring; the number of clamping assemblies 30 is two groups, and the two groups of clamping assemblies 30 seal and fix the first hoop petal 21 and the second hoop petal 22 on both sides respectively.

[0031] When using the above-mentioned plastic pipe interface water pressure online detection device, the first hoop flap 21 and the second hoop flap 22 are sleeved on the pipe interface that needs to be leak tested. During the installation process, the first hoop flap 21 is located above the pipe interface, so that the pressure detection gauge 10 is on top, so as to observe the value; after the first docking flange 211 is aligned with the second docking flange 221, the pipe sealing hoop 20 is sealed and fixed by the clamping assembly 30. First, the elastic pressing part 32 at one end of the adjacent card slot 31 is aligned with the gap in front of the stop protrusion at one end of the first docking flange 211. Secondly, the card slot 31 is clamped in the first pair of The upper side of the connecting flange 211 and the lower side of the second connecting flange 221 are connected, and the elastic tightening part 32 is inserted into the gap between the stopping protrusions. Finally, the slot 31 is pushed toward the other end of the first connecting flange 211 until the stopping protrusion has a stopping effect on the elastic tightening part 32. Since the elastic tightening part 32 is restricted by the second flange 313 in the height direction, the lower side of the elastic tightening part 32 and the upper side of the stopping protrusion are squeezed against each other. Through the generated large friction force, the stopping protrusion locks the elastic tightening part 32, so that the first connecting flange 211 and the second connecting flange 221 are close to each other and fit together to form a sealed hoop body.

[0032] The above-mentioned plastic pipe interface water pressure online detection device can achieve at least the following technical effects:

[0033] Horizontally moving a pair of clamping assemblies 30 can clamp and fix the first hoop flap 21 and the second hoop flap 22 which are sleeved at the pipe interface, so that the first hoop flap 21 and the second hoop flap 22 form a complete hoop body at the pipe interface, which has higher efficiency and convenience in use compared to fixing the first hoop flap 21 and the second hoop flap 22 by using multiple bolts or rolled strips or pipe clamps; in the process of fixing the first hoop flap 21 and the second hoop flap 22 by the clamping groove 31, the multiple elastic tightening parts 32 arranged in an array on the clamping groove 31 squeeze the stop protrusion downward at the same time, so that the first docking flange 211 and the second docking flange 221 are sealed and fit together. Compared with other detection devices that use bolts and nuts to fix the hoop body for sealing the pipe, the above-mentioned plastic pipe interface water pressure online detection device is not easy to cause the hoop body to deform due to uneven force at the connection, resulting in sealing failure. At the same time, it prolongs the service life of the hoop body, and to a certain extent slows down the damage assessment cycle and replacement cycle of the water pressure detection device.

[0034] In addition, the present application also provides some more specific implementation methods to improve the above-mentioned plastic pipe interface water pressure online detection device.

[0035] Furthermore, in order to facilitate the formation of a firm stopping fit relationship between the elastic tightening portion 32 and the stopping protrusion, the stopping protrusion includes a first wedge block 212, and a plurality of first wedge blocks 212 are arranged in an array on the upper side of the first docking flange 211 along the extension direction of the pipeline, and a docking gap into which at least part of the elastic tightening portion 32 can be inserted is formed between the first wedge blocks 212; the elastic tightening portion 32 includes a second wedge block 321 and an elastic reset mechanism 322, and a plurality of elastic reset mechanisms 322 are arranged in an array on the second flange 313, the second wedge block 321 is fixedly connected to the elastic reset mechanism 322, and the blocking sheet 3211 is provided on the side of the second wedge block 321 away from the web 311, and when the above-mentioned slot 31 is slid along the second flange 313, the elastic reset mechanism 322 can make the second wedge block 321 and the first wedge block 212 approach and engage with each other.

[0036] Specifically, the elastic reset mechanism 322 includes a component capable of directionally extending and retracting through elasticity; it is used to allow the second wedge block 321 to have a certain displacement margin in the height direction; at least a portion of the blocking plate 3211 can extend downward and extend out of the side of the second wedge block 321 away from the web 311.

[0037] When using the above device, first insert the second wedge block 321 into the docking gap between the first wedge block 212, and move the slot 31 toward the other end of the first docking flange 211, so that the inclined surface of the second wedge block 321 and the inclined surface of the first wedge block 212 are close to and meshed with each other, until the highest point of the upper inclined surface of the second wedge block 321 moves to the highest point of the upper inclined surface of the first wedge block 212, and the second wedge block 321 and the first wedge block 212 form a stop fitting relationship in the height direction; the blocking piece 3211 is located on the side of the first wedge block 212 away from the web 311, and the blocking piece 3211 can make the slot 31 move in a straight line to prevent the second wedge block 321 from disengaging from the first wedge block A wedge block 212 firmly fixes the slot 31 to the first docking flange 211 and the second docking flange 221; the moment the second wedge block 321 contacts the first wedge block 212, the elastic reset mechanism 322 can lift the second wedge block 321 upward for a distance, so that the inclined surface of the second wedge block 321 covers the inclined surface of the first wedge block 212, and as the second wedge block 321 moves to a higher position of the first wedge block 212, the elastic reset mechanism 322 is gradually compressed upward, and the elastic reset mechanism 322 also gradually increases the downward pressure on the second wedge block 321, so that the second wedge block 321 and the first wedge block 212 are close to each other and mesh, producing a stopping effect.

[0038] Furthermore, in order to meet the functional requirements of the above-mentioned elastic reset mechanism 322, the above-mentioned elastic reset mechanism 322 includes a guide rod 3221, a spring 3222 and a blocking protrusion 3223. The second flange 313 is provided with a plurality of through holes in an array along the extension direction of the pipeline. The guide rod 3221 is penetrated through the through hole, and one end of the guide rod 3221 extending downward into the slot 31 is fixedly connected to the upper side of the second wedge block 321. The above-mentioned blocking protrusion 3223 is arranged at one end of the guide rod 3221 away from the second wedge block 321. The spring 3222 is sleeved on the middle section of the guide rod 3221, and one end is fixedly connected to the second flange 313.

[0039] Specifically, the blocking protrusion 3223 is in the shape of a pancake, and the diameter of the blocking protrusion 3223 is larger than the diameter of the above-mentioned through hole; among the several through holes on the second flange 313, every two adjacent through holes are regarded as a group, and a guide rod 3221 is arranged in each group of through holes, that is, each second wedge block 321 is connected to two guide rods 3221, so as to improve the stability and durability of the elastic reset mechanism 322; the spring 3222 is located above or below the second flange 313, and plays the role of lifting and pressing down the second wedge block 321, and the blocking protrusion 3223 can limit the spring 3222 and the guide rod 3221.

[0040] Furthermore, in order to improve the portability of the clamping assembly 30, the length of the blocking piece 3211 and the length of the second wedge block 321 are both smaller than the width of the docking gap, thereby leaving a docking margin so that the operator can quickly insert the second wedge block 321 into the docking gap and quickly dock the slot 31 with the first docking flange 211 and the second docking flange 221.

[0041] In order to further improve the installation convenience of the above-mentioned clamping assembly 30, the above-mentioned plastic pipe interface water pressure online detection device also includes an installation auxiliary assembly 40, which includes a push rod 41, a connecting protrusion 42 and a force plate 43. The connecting protrusion 42 is arranged at one end of the first docking flange 211 or the second docking flange 221. The connecting protrusion 42 is penetrated by a guide hole 421 along the extension direction of the pipeline. One end of the push rod 41 passes through the guide hole 421, and a force plate 43 is arranged at the end of the push rod 41 away from the end of the first docking flange 211. The push rod 41 is used to push the slot 31 to slide along the second docking flange 221.

[0042] Since the web 311 of the clamping slot 31 is limited by thickness, it is not convenient for the operator to directly apply a thrust to it, so the clamping assembly 30 is installed through the installation auxiliary assembly 40. When in use, by applying force to the push rod 41, the push rod 41 and the force plate 43 transmit the thrust to the clamping slot 31, pushing the clamping slot 31 to slide, so that the elastic pressing part 32 and the stopper protrusion produce a stopper effect.

[0043] In order to make the above-mentioned installation auxiliary component 40 have a labor-saving effect, a first thread is provided in the above-mentioned guide hole 421, and a second thread is provided on the surface of the push rod 41. The push rod 41 is rotationally connected with the guide hole 421 through the second thread, that is, the push rod 41 can push the slot 31 to move by rotating the push rod 41; the force plate 43 and one end of the push rod 41 are rotatably connected through a rotating shaft or a bearing to prevent the force plate 43 from moving relative to the slot 31 when the push rod 41 rotates, so that the force plate 43 can stably push the slot 31 forward; and an auxiliary knob 44 is provided on the end of the push rod 41 away from the force plate 43, so that the operator can use a wrench or directly rotate the push rod 41 with his fingers.

[0044] In order to further improve the labor-saving effect of the installation auxiliary component 40, the auxiliary knob 44 is provided with a cross-shaped or regular hexagonal plug-in port 441 at one end away from the push rod 41, and the plug-in port 441 is used to plug in tightening tools such as a cross screwdriver, an Allen wrench, or a hand drill equipped with an adapter. The operator can rotate the push rod 41 through the tightening tool, so that the clamping component 30 quickly clamps the first hoop petal 21 and the second hoop petal 22.

[0045] Furthermore, in order to facilitate the removal of the clamping assembly 30 from both sides of the pipe sealing hoop 20, the number of the installation auxiliary assemblies 40 is four groups, and the four groups of installation auxiliary assemblies 40 are respectively arranged at both ends of the first docking flange 211 or the second docking flange 221 located on both sides of the pipe sealing hoop 20. Among them, the installation auxiliary assembly 40 located at one end of the first docking flange 211 or the second docking flange 221 is used to push the card slot 31 so that the elastic pressing part 32 and the stopper protrusion produce a stopper effect; the installation auxiliary assembly 40 located at the other end of the first docking flange 211 or the second docking flange 221 is used to push the card slot 31 so that the elastic pressing part 32 leaves the stopper protrusion and releases the stopper fit.

[0046] Furthermore, in order to improve the sealing effect of the pipeline sealing hoop 20, a sealing strip 213 is provided along the extending direction of the pipeline on one side where the first docking flange 211 and the second docking flange 221 are in contact with each other.

[0047] Specifically, the sealing strip 213 extends from one end of the first docking flange 211 or the second docking flange 221 to the other end. After the first docking flange 211 and the second docking flange 221 are fitted together, the sealing strip 213 can further reduce the gap between the first hoop petal 21 and the second hoop petal 22. When the pipeline leaks, the clamping assembly 30 and the sealing strip 213 cooperate to strengthen the sealing effect of the pipeline sealing hoop 20, thereby improving the pressure resistance of the pipeline sealing hoop 20.

[0048] Furthermore, in order to enable the above-mentioned plastic pipe interface water pressure online detection device to simultaneously meet the external pressure resistance test conditions of the pipe interface, a second interface 25 is provided on the wall surface of the first hoop flap 21 or the second hoop flap 22 away from the pipe, and the second interface 25 is detachably connected to an auxiliary pressurizing mechanism 50 such as an electric pressure leak detection device or a manual pressure leak detection device through a pipeline. The auxiliary pressurizing mechanism 50 is used to inject a pressure measuring medium between the pipe sealing hoop 20 and the pipe.

[0049] Specifically, water or other pressure measuring media is injected between the pipeline sealing hoop 20 and the pipeline interface through the auxiliary pressure testing equipment, and the external pressure resistance test of the pipeline interface is performed in conjunction with the pressure testing gauge 10.

[0050] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A plastic pipe interface water pressure online detection device, including a pressure detection gauge, characterized in that: Also includes, A pipe sealing hoop, the pipe sealing hoop comprising a first hoop flap and a second hoop flap, the first hoop flap and the second hoop flap are used to be close to the wall of the pipe and are provided with sealing gaskets at both ends, the first hoop flap or the second hoop flap is provided with a first interface away from the wall of the pipe, and the first interface is fixedly connected to the pressure detection gauge; the first hoop flap surface is symmetrically provided with a first docking flange along the extension direction of the pipe, the second hoop flap is provided with a second docking flange relative to the first docking flange, and a plurality of stopper protrusions are arranged in an array on one side of the first docking flange away from the second docking flange; and, A clamping assembly, the clamping assembly includes a clamping slot and an elastic clamping portion, the clamping slot includes a web and a first flange and a second flange symmetrically arranged on opposite sides of the web, the first flange is slidably connected to the side of the second docking flange away from the first docking flange, the second flange array is provided with a plurality of the elastic clamping portions, at least part of the elastic clamping portions is connected to the stop protrusion in a stop-fitting manner.

2. The plastic pipe interface water pressure online detection device according to claim 1 is characterized in that: The stop protrusion includes a first wedge block, which is arranged in an array on one side of the first docking flange along the extension direction of the pipeline, and a docking gap is arranged between the first wedge blocks; the elastic tightening part includes a second wedge block and an elastic reset mechanism, and the second flange array is provided with a plurality of the elastic reset mechanisms, the second wedge block is fixedly connected to the elastic reset mechanism, and a blocking sheet is arranged on the side of the second wedge block away from the web, and the elastic reset mechanism is used to make the second wedge block and the first wedge block approach each other and engage with each other.

3. The plastic pipe interface water pressure online detection device according to claim 2 is characterized in that: The elastic reset mechanism includes a guide rod, a spring and a blocking protrusion. The second flange array is provided with a plurality of through holes. The guide rod is penetrated through the through holes. One end of the guide rod extending into the slot is connected to the second wedge block. The blocking protrusion is provided at one end of the guide rod away from the second wedge block. The spring is sleeved on the middle section of the guide rod, and one end of the spring is fixedly connected to the second flange.

4. The plastic pipe interface water pressure online detection device according to claim 2 is characterized in that: The length of the blocking piece and the length of the second wedge-shaped block are both smaller than the width of the butt joint gap.

5. The plastic pipe interface water pressure online detection device according to claim 1 is characterized in that: It also includes an installation auxiliary component, which includes a push rod, a connecting protrusion and a force plate. The connecting protrusion is arranged at one end of the first docking flange or the second docking flange. The connecting protrusion is penetrated by a guide hole along the extension direction of the pipeline. One end of the push rod passes through the guide hole, and the force plate is arranged at one end of the push rod away from the end of the first docking flange. The push rod is used to push the slot to slide along the second docking flange.

6. The plastic pipe interface water pressure online detection device according to claim 5 is characterized in that: A first thread is provided in the guide hole, a second thread is provided on the surface of the push rod, the push rod is rotationally connected with the first thread through the second thread, the force plate is rotatably connected to one end of the push rod, and an auxiliary knob is provided at the end of the push rod away from the force plate.

7. The plastic pipe interface water pressure online detection device according to claim 6 is characterized in that: A plug-in interface is provided on a side of the auxiliary knob facing away from the push rod. The plug-in interface is in a cross shape or a regular hexagonal shape and is used for plugging in a tightening tool.

8. The plastic pipe interface water pressure online detection device according to claim 7, characterized in that: The number of the installation auxiliary components is four, and the four groups of the installation auxiliary components are respectively arranged at both ends of the first docking flange or the second docking flange.

9. The plastic pipe interface water pressure online detection device according to claim 1, characterized in that: A sealing strip is provided along the extending direction of the pipeline on one side where the first butt flange and the second butt flange are in contact with each other.

10. The plastic pipe interface water pressure online detection device according to claim 1, characterized in that: A second interface is provided on the wall surface of the first hoop flap or the second hoop flap facing away from the pipeline, and the second interface is detachably connected to an auxiliary pressurizing mechanism, which is used to inject a pressure measuring medium between the pipeline sealing hoop and the pipeline.

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